A biotechnology company today announced positive results from a limited clinical trial evaluating a DNA vaccine candidate as a booster targeting the Zaire Ebolavirus.
This placebo-controlled Phase, 1b trial assesses its safety, tolerability, and immunogenicity in healthy adult participants who previously received a single injection of Merck's Ervebo®, a vaccine approved by the U.S. Food and Drug Administration for the prevention of disease caused by Zaire ebolavirus.
In the trial, INOVIO Pharmaceuticals, Inc.'s INO-4201 vaccine candidate was well-tolerated and boosted humoral responses in 100% (36 of 36) of study participants.
INO-4201 is a DNA vaccine targeting Zaire Ebola virus (ZEBOV) glycoprotein, designed to prevent ZEBOV infection. It encodes for a synthetic consensus antigen encompassing ZEBOV genetic variability from various outbreak strains to broaden immune coverage for divergent ZEBOV virus variants.
The participants were dosed with 1 mg of INO-4201 injected intradermally, followed by electroporation using our investigational proprietary smart device, CELLECTRA®.
Dr. Angela Huttner, MD, Infectious Disease Consultant, Geneva University Hospitals, and the study's lead investigator, commented in a press release on February 2, 2023, "INO-4201 was well-tolerated and all treated participants responded to the booster vaccine."
"These are encouraging results since our participants were initially vaccinated with Ervebo three to seven years ago."
"We remain grateful to our participants for their critical role in developing this vaccine candidate, which we hope will be a key player in future Ebola Virus Disease prevention."
This news is essential since recent research suggests dormant Ebola virus in a previously infected survivor could re-emerge up to nearly five years later and again allow human-to-human transmission Keita et al. Nature (Sept. 15, 2021).
The Ebola virus is classified as a Category A Priority Pathogen by the U.S. Centers for Disease Control and Prevention (CDC). This designation indicates a national security risk.
The Ebola virus family includes four virus species that cause periodic outbreaks of a highly contagious and lethal human infectious disease – called Ebola Virus Disease (EVD).
The virus is transmitted from wild animals to people and then easily spreads via human-to-human transmission.
Ebola outbreak news from 2022 and 2023 are posted at Vax-Before-Travel.com/Ebola.
The trial was spearheaded by Global Urgent and Advanced Research and Development, sponsored by Geneva University Hospitals, and funded by the U.S. Defense Advanced Research Projects Agency.
INOVIO is a biotechnology company focused on developing and commercializing DNA medicines. For more information, visit www.inovio.com.